first commit

Makefile

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+.PHONY: all preview render opengl venv
+all: preview
+
+preview: main.py
+	manim render main.py -pqm 
+
+render: main.py
+	manim render main.py -qh 
+
+opengl: main.py
+	manim render main.py -p --renderer=opengl
+
+venv: requirements.txt
+	python -m venv venv
+	source venv/bin/activate
+	pip install -r requirements

main.py

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+from manim import *
+import math
+
+def norm(vec):
+    return math.sqrt(sum([xi ** 2 for xi in vec]))
+
+def normalize(vec):
+    n = norm(vec)
+    return [xi / n for xi in vec]
+
+def plus(v1, v2):
+    return [x1 + x2 for x1, x2 in zip(v1, v2)]
+
+def minus(v1, v2):
+    return [x1 - x2 for x1, x2 in zip(v1, v2)]
+
+def mult(v, c):
+    return [xi * c for xi in v]
+
+def SegmentedLine(points):
+    assert(len(points) >= 2)
+    ret = []
+    for p1, p2 in zip( points[:-1], points[1:] ):
+        vec = minus(p2, p1)
+        length = norm(vec)
+        normalized = normalize(vec)
+        rotated = [-normalized[1], normalized[0], 0]
+
+        ret.append(p1)
+        ret.append(plus(p1, mult(normalized, length * 1/3)))
+        ret.append(plus(p1, plus(mult(normalized, length/2), mult(rotated, math.sqrt(3) * length / 6))))
+        ret.append(plus(p1, mult(normalized, length * 2/3)))
+    ret.append(points[-1])
+    return ret
+
+class snowflake(Scene):
+    def construct(self):
+
+        points = [[-7, -1, 0],
+                  [ 7, -1, 0]]
+
+        segment = VMobject(stroke_width=1)
+        segment.set_points_as_corners(points)
+
+        self.add(*[Dot(p) for p in points])
+
+        self.play(Create(segment))
+        self.wait(1)
+
+        vg = VGroup()
+        for i in range(3):
+            points = SegmentedLine(points)
+            vg.add(*[Dot(p) for p in points])
+            self.play(Create(vg))
+            self.play(segment.animate.set_points_as_corners(points))
+            self.wait(1)
+
+        self.play(Uncreate(vg))
+        self.play(*[FadeOut(mob) for mob in self.mobjects])
+
+
+if __name__ == "__main__":
+    sc = snowflake()
+    sc.render(True)

manim.cfg

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+[CLI]
+frame_rate = 30
+pixel_height = 1080
+pixel_width = 1920
+background_color = BLACK
+background_opacity = 1
+scene_names = snowflake
+

requirements.txt

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+asttokens==3.0.0
+audioop-lts==0.2.1
+av==13.1.0
+beautifulsoup4==4.13.3
+click==8.1.8
+cloup==3.0.6
+dearpygui==2.0.0
+decorator==5.2.1
+executing==2.2.0
+glcontext==3.0.0
+ipython==9.0.1
+ipython_pygments_lexers==1.1.1
+isosurfaces==0.1.2
+jedi==0.19.2
+manim==0.19.0
+ManimPango==0.6.0
+mapbox_earcut==1.0.3
+markdown-it-py==3.0.0
+matplotlib-inline==0.1.7
+mdurl==0.1.2
+moderngl==5.12.0
+moderngl-window==3.1.1
+networkx==3.4.2
+numpy==2.2.3
+parso==0.8.4
+pexpect==4.9.0
+pillow==11.1.0
+prompt_toolkit==3.0.50
+ptyprocess==0.7.0
+pure_eval==0.2.3
+pycairo==1.27.0
+pydub==0.25.1
+pyglet==2.1.3
+pyglm==2.8.0
+Pygments==2.19.1
+rich==13.9.4
+scipy==1.15.2
+screeninfo==0.8.1
+skia-pathops==0.8.0.post2
+soupsieve==2.6
+srt==3.5.3
+stack-data==0.6.3
+svgelements==1.9.6
+tqdm==4.67.1
+traitlets==5.14.3
+typing_extensions==4.12.2
+watchdog==6.0.0
+wcwidth==0.2.13